阅读说明：本技术 一种基于InSAR监测森林蓄积量方法 (Method for monitoring forest accumulation based on InSAR ) 是由 祖笑锋 戴维序 高庆 李培琳 于 2019-11-07 设计创作，主要内容包括：一种基于InSAR监测森林蓄积量方法,包括以下步骤：S1：至少选取两种不同的数据源数据,在空间上对监测区域进行连续密集的覆盖；S2：对所述步骤S1中的数据源数据进行联合干涉处理,得到监测区域像素点的高程；S3：计算树木的体积得到森林蓄积量。本发明中,通过采用InSAR监测森林蓄积量,检测的速度快,且结果准确,同时选取ALOS高分辨率雷达卫星和SPOT高分辨率雷达卫星的数据作为数据源,数据获取简单,且精度高,数据源数据通过综合PS和SBAS的方法进行联合干涉处理,既用到了PS点,也用到了时间相关像素,生成的干涉图像更加准确。(A method for monitoring forest accumulation based on InSAR comprises the following steps: s1: selecting at least two different data source data, and carrying out continuous and dense coverage on a monitoring area in space; s2: performing joint interference processing on the data source data in the step S1 to obtain the elevation of the pixel point in the monitoring area; s3: and calculating the volume of the trees to obtain the forest storage amount. According to the method, the forest accumulation is monitored by adopting the InSAR, the detection speed is high, the result is accurate, the data of the ALOS high-resolution radar satellite and the SPOT high-resolution radar satellite are simultaneously selected as the data source, the data acquisition is simple, the precision is high, the data of the data source is subjected to combined interference processing by a method of integrating PS and SBAS, not only PS points but also time-related pixels are used, and the generated interference image is more accurate.)

1. A forest accumulation monitoring method based on InSAR is characterized in that: the method comprises the following steps:

s1: selecting at least two different data source data, and carrying out continuous and dense coverage on a monitoring area in space;

s2: performing joint interference processing on the data source data in the step S1 to obtain the elevation of the pixel point in the monitoring area;

s3: and calculating the volume of the trees to obtain the forest storage amount.

2. The InSAR-based forest accumulation monitoring method according to claim 1, wherein: in step S1, the selected data source data are an ALOS high-resolution radar satellite and a SPOT high-resolution radar satellite.

3. The InSAR-based forest accumulation monitoring method according to claim 2, wherein: the method of performing the joint interference processing on the data source data in step S1 in step S2 is a method of integrating PS and SBAS.

4. The InSAR-based forest accumulation monitoring method according to claim 3, wherein: and in the step S3, judging that the height of the pixel point is 1 meter greater than the ground height to be a log.

Technical Field

The invention relates to the technical field of forest accumulation amount detection, in particular to a forest accumulation amount monitoring method based on InSAR.

Background

InSAR is a radar technology applied to mapping and remote sensing. The method is a technology for acquiring the elevation information of the earth surface by utilizing a synthetic aperture radar to carry out coherent processing on two complex value images (images with both amplitude and phase) observed in the same area.

The forest accumulation amount refers to the total volume of all kinds of standing trees existing in a forest with a certain area, and the unit of cubic meter is taken as a calculation unit.

Most of the existing methods for predicting and predicting the forest accumulation amount adopt a vegetation index for monitoring, and the result usually has not small deviation, so that the forest accumulation amount detection is inaccurate.

Therefore, there is a need to provide a new technical solution to overcome the above-mentioned drawbacks.

Disclosure of Invention

The invention aims to provide a forest accumulation monitoring method based on InSAR, which can effectively solve the technical problems.

In order to achieve the purpose of the invention, the following technical scheme is adopted:

a method for monitoring forest accumulation based on InSAR comprises the following steps:

s1: selecting at least two different data source data, and carrying out continuous and dense coverage on a monitoring area in space;

s2: performing joint interference processing on the data source data in the step S1 to obtain the elevation of the pixel point in the monitoring area;

s3: and calculating the volume of the trees to obtain the forest storage amount.

Further: in step S1, the selected data source data are an ALOS high-resolution radar satellite and a SPOT high-resolution radar satellite.

Further: the method of performing the joint interference processing on the data source data in step S1 in step S2 is a method of integrating PS and SBAS.

Further: and in the step S3, judging that the height of the pixel point is 1 meter greater than the ground height to be a log.

Compared with the prior art, the invention has the following beneficial effects: the method is based on the InSAR forest accumulation monitoring method, the InSAR forest accumulation monitoring method is adopted, the detection speed is high, the result is accurate, the data of the ALOS high-resolution radar satellite and the SPOT high-resolution radar satellite are simultaneously selected as data sources, the data acquisition is simple, the precision is high, the data source data are subjected to combined interference processing by a method of integrating PS and SBAS, both PS points and time-related pixels are used, and the generated interference image is more accurate.

Detailed Description

The method for monitoring forest accumulation based on InSAR is clearly and completely explained below. The invention discloses a method for monitoring forest accumulation based on InSAR, which comprises the following steps:

s1: selecting at least two different data source data, and carrying out continuous and dense coverage on a monitoring area in space;

preferably, the data of the ALOS high-resolution radar satellite and the SPOT high-resolution radar satellite are selected.

S2: performing joint interference processing on the data source data in the step S1, wherein the processing method is a method of integrating PS and SBAS to obtain the elevation of the pixel point in the monitoring area;

s3: and judging that the elevation of the pixel point is 1 meter greater than the elevation of the ground, and calculating the volume of the tree to obtain the forest storage amount.

The invention has the following beneficial effects: the method is based on the InSAR forest accumulation monitoring method, the InSAR forest accumulation monitoring method is adopted, the detection speed is high, the result is accurate, the data of the ALOS high-resolution radar satellite and the SPOT high-resolution radar satellite are simultaneously selected as data sources, the data acquisition is simple, the precision is high, the data source data are subjected to combined interference processing by a method of integrating PS and SBAS, both PS points and time-related pixels are used, and the generated interference image is more accurate.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.